Cushion-tire.



F. A. KRUSEMARK, L.- G. FUNKHOUSER L H. G. CARPENTER.

CUSHION TIRE.

APPLICAHON FILED MAR. 9. 191e.

-1 277,953. Patented-Sept?. 3, 1918.

UN ITED STATES OFFICE.

I FREDERICK AUGUSTUS KRUSEMARK, 'LUTHER G. FUNKHOUSER, AND HARRY G.

cmnnrrnn, or BoANoKE, VIRGINIA, Assienons To mr. & c. TIRE sa RUBBER l.iionroianrroiir,orBoAiioKn, VIRGINIA, AconronarionoF.V1RGiN1A-.

auspicia-TIRE.

Application filed March 9, 1918. Serial No. 221,535. i i i f l f `l3e'?"it iotv-'irf-tl'ialt'l "we, FREDERICK AU- Gns'rijsf Kiinsni'ranii, LUTHER G. FUNK- HoUsiiif, 'aiidi'l-IRRY G.' CARPENTER, citizens of tlieUnited'Statesof America', and residents, respe'c'tiirely, fof Roanoke, county of Roanoke/,fand'K State'fof, Virginia, haveinvented r'certain*nenYY and useful Improvements inv Cushion-Tires, of. Which the fol-I.'

lowingjis'a full'and clear specification.

Thislapplica'tion'is a substitute for and a continuation'in,Sart of our application filed1Augiisp2i',i9ilz, serial No. 187,405.

Airbbject'ofil this inventionis to provide al structure which `Will insure not only the l' maximum 'of ,"resi'lienc'y, but the most etticient degree .of 'resiliency for this 'type of tire. further object is to so construct the Y tire thatnitl'sha'll have a maximum of durability-,by reason not only ofthe provision of means" for takingfup the numerousv and peculiarv stresses that tires of this sort are subjectedjtq-butzalso because of the ample provi" nffor ykeeping down the temperature lot thei'tire 'thorough lifentilation t ereofiflivliilefiinder: traction strains. Ar

pnoyedtire, partly in side elevation and.

' partly ginf section onthe line 1-1 of Fig. 2;

Fig. Iitis a transverse sectional View taken on the line. Q-f-Q of Fig. l;v

Figi?) is a detail,longitudinal sectional View of a.v portionv of the tire;

Fig. d isa ,similaryieii' showing a slight inodiiiltion;A ,Y y f Figsi 5' and Glare diagrammatic views showing two-different arrangements-0f the spiral cordebands Fig.l 7 isa detail View showing the man.- ner of applying onefeature of the invention to a tire of the clenoher type;

Fig. 8 is a detail View showing the methodof giving an extra degreebf tautness to the truss bands over the openings.'

a solid rubber inass suitably shaped iii "intente septfs-,ifaisll' The tire in .its preferred foi'in consists of' transverse section andprovided ii'ithftwo circumferential series 'ot slots and C", these slots extending transversely entirelyY through the tire from side t0 side, the slots of: each series being separated sutliciently to form' radial pillars fZ bctii'eeiitheslots` of the outer series aiidisiinilar pillarsc "betiiceii the ends ot' the slots of the inner series, the slots ot'oiie series being staggered lwith ref erenceto the slots of the otherscries,`soasl to bring each pillar Z opposite the center of the adjacentI slot` @and each pillar@ 'oppof lof the adjacent l one of the" site the center slots b.

ilns arrangement of slots, that is', anl inner row or series of circumferential slots and an outer row of circumferential slots', naturallyv divides thetire into three circuinerential zones, which form in 'eifectcircumferential bands. One of these bands, designated bythe letter lf, forms means VJfor se-J curing the tire to the rim, anotherl one4 of' these bandsl forms the tread surface of the tire, While the central band, or portion forms the connecting medium between the" inner series of pillars e andthe outer series of pillars d'. Embedded in the outer i' or tread band gis a series of flat strips z' c0in' posed of cordslaid side by side, or of canvas or other librous material, extending the entire circumference' of the tire.' ln the central or intermediate zone, similar series of bands j is embedded. These bands run substantially parallel t-o each other except along the outer Wall or" each of the slots, at

which point several of the' bands dip or' "i" curve inwardly, the outer Wall lo of the slot being bulged or curved inwardly suliiciently to permit this to be done.I` Thus inwardly convexing thev outer Wall of eachA of the slots and extending thereintoone or more of the strengthening bands i or y' converts the outer Wall'` of lthe -slot into a truss-like member which, When the 'tire is radially squeezed by,

a load or shock, Will cause 'the bands to bel drawn circumferentially toward vthe dis? fino torted part ot the tire, thus transmitting vto y The cords may be passed from side to side ofitlzieitirefhshdwndn Fi :.1'5; with crossings' the treadjgslmface'aimdtalsoeat .p'ointswine f."

the'tread surface and then down againl to the same sideof theltie`-,1asshownxin Fig. 6, in which caseth'eyftwill desirably be interloclied with each lother at the tread surface. In any case, however, these cords will, as usual, be coated with sticky rubber, so as to hold their positions when .properly placed around t-he partly-completed tire in the process of making the same; and, when the rubber mass is vllcanized, they of course will' be embedded in the mass and the bands formed by the cords vwill cross each other not only on the tread surface over each of the outer 'openings b, but also at the sides of the tire at points between the openings, so that, with-our arrangement, there will be the same advantageous results as are gained by the spiral arrangement of bands covered by said co-pending application of Van and Krusemark. 4

-To assist in anchoringthe anchoring pins t and the loops of the cords s and for the purpose also offstrengthening the rim portion of the tire, we prefer embedding in each of the hard ring masses g a series of wire rings u.

The nature and scope of the invention having Ybeen thus indicated and its preferredembodiment having been specifically described, what is claimed as new is:

1. Arubber tire provided-with two series of transverse slots extending circumferentiallyl` the slots of one series overlapping the slots of the other series, the outer walls of the outer slots arching inwardly, strengthening bands embedded in the tire extending eircumferentially thereof in the zone outside of the outer series of slots, one'at'least of these bands following the curvature of the arched outer walls of the slots, for the purposes set forth.

Ness

2. A rubber tireprovided withia series of arched outer walls of the slots, for the pur-A pose set forth.

3. A rubber tire provided with an outer series of circumferential slots as well as an inner series of similar slots extending from side to side of the tire and open at their ends,

the slots of one series overlapping the-slots of the other series. the transverse edge-walls of the slots being roundcd so as to thereby form a series of radial pillars staggered with reference to each other and Connected tol portions.

ends oft-he.I outer-pillarsiiimd the' rebbe mass at. the outer ends o-t'vftheinneripillars and also through said oppositely-tapering el. A cushion tire consisting of a resilient mass provided with a circumferential series of slots extending from side to side of the tire, having embedded in the mass outside of said slots la. series of circumferential fibrous bands, one or more of these bands being dipped inwardly vover each of the outer walls'of said slots.

5. A cushion tire consisting of a resilient mass provided with transverse slots, these slotg` being `rarranged in a circumferential series and' extending from side to side of the tire, a fibrous strain-'distributing band eX- tending circumferentially of the tire between said slots and the tread surface, this band being dipped inwardly over the outer wall of each of said slots, this dipped .part of the band being stretched. y

G. A resilient'tire, consisting of a rubber mass provided with a circumferential series l of transverse slots, a plurality of bands ex- 95 tending through the mass between said slots and the tread surfacethe bands being separated by filling masses'at points over said slots to thus cause the inner bands to bulge or dip inwardly toward said slots, these inwardly-bulged parts of the bands being stretched to give an extra degree of tautness to these inner bands.

7. A4 cushion tire having embedded in its. rim zone a pair of hardened ring-like masses around each side edge of the tire, the inner faces of these masses being beveled or inclined, these beveled faces facing toward the rim face of the tire, for the purpose set forth. 110

8. A cushion tire providedwith transverse slots arranged in a circumferential; series and having embedded in its mass a series of spirally-arranged bands crossin each other at points between the slots and 1,15 the tread zone of the tire, each of these bands consisting of a cord. folded back and forth and having its looped ends anchored in the rim zone of the tire.

9. The structure recited in claim 8,- an- 120 choring pins being provided in the rim cumferential seriesjof transverse passages, me

, `one series being staggered with reference to the other and arranged in overlapping relation thereto, thereby forming vntually an nner series of pillars and an outer series of "*f-pillars, circumferential bands embedded in tions which dip toward the rim side of the tire adjacent each of said passages.

n testimony whereof We hereunto aiix our signatures this 7th day of Mar., 1918.

FREDERICK AUGUSTUS KRUSEMARK. LUTHER G. FUNKHOUSER. HARRIY G. CARPENTER. 

